<!DOCTYPE HTML>
<!--
     Any copyright is dedicated to the Public Domain.
     http://creativecommons.org/publicdomain/zero/1.0/
-->
<html><head>
  <meta charset="utf-8">
  <title>Reference: Fragmentation, various edge cases</title>
  <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1144096">
  <style type="text/css">
html,body {
    color:black; background-color:white; font-size:16px; padding:0; margin:0;
}
body { overflow:hidden; }

.columns {
  position:relative;
     -moz-columns: 5;
      -ms-columns: 5;
  -webkit-columns: 5;
          columns: 5;
     -moz-column-fill: auto;
      -ms-column-fill: auto;
  -webkit-column-fill: auto;
          column-fill: auto;
  border: 2px dashed;
  margin-bottom: 5px;
}

.grid {
  display: block;
  border:5px solid;
  align-content: start;
}
span { display:block; height:20px; width:30px; }
i { display:block; height:10px; background:blue; }
.t { border-bottom-width:0; }
.b { border-top-width:0; }
.m { border-bottom-width:0; border-top-width:0; }
</style>
</head>
<body>

<div class="columns" style="height:30px">
<div style="background:grey">
<div class="grid t" style="height:25px">
<span><i style="height:25px"></i></span>
</div>
<div class="grid m" style="height:25px">
<span><i style="height:25px"></i></span>
</div>
<div class="grid m" style="height:25px">
<span><i style="height:10px"></i></span>
</div>
<div class="grid b" style="height:25px">
</div>
</div></div>

<div class="columns" style="height:40px">
<div style="background:grey">
<div class="grid t" style="height:60px; overflow:hidden">
<span><i style="overflow:hidden;height:60px"></i></span>
</div>
<div class="grid m" style="height:40px">
<span><i style="height:20px"></i></span>
</div>
<div class="grid b" style="height:0px">
</div>
</div></div>

<div class="columns" style="height:30px; margin-left:40px">
<div style="background:grey">
<div class="grid t" style="height:25px">
<span><i style="height:25px"></i></span>
</div>
<div class="grid m" style="height:25px">
<span><i style="height:25px"></i></span>
</div>
<div class="grid m" style="height:25px">
<span><i style="height:10px"></i></span>
</div>
<div class="grid b" style="height:25px">
</div>
</div></div>

<div class="columns" style="height:40px; margin-left:40px">
<div style="background:grey">
<div class="grid t" style="height:60px; overflow:hidden">
<span><i style="overflow:hidden;height:60px"></i></span>
</div>
<div class="grid m" style="height:40px">
<span><i style="height:20px"></i></span>
</div>
<div class="grid b" style="height:0px">
</div>
</div></div>

<div class="columns" style="height:40px; margin-left:80px">
<div style="background:grey">
<div class="grid" style="height:20px">
<span><i style="overflow:hidden;height:60px"></i></span>
</div></div>
<div style="height:10px"></div>
<div style="margin-left:5px">
<span><i style="height:20px"></i></span>
</div>
</div></div>

<div class="columns" style="height:70px; margin-left:120px">
<div style="background:grey">
<div class="grid t" style="height:30px">
<span><i style="height:30px"></i></span>
</div>
<div style="height:35px"></div>
<div class="grid b" style="height:30px">
<span><i style="height:50px"></i></span>
</div>
</div></div>

<div class="columns" style="height:70px">
<div style="background:grey">
<div class="grid t" style="height:30px">
<span><i style="height:30px"></i></span>
</div>
<div style="height:35px"></div>
<div class="grid b" style="height:32px">
<span><i style="height:50px"></i></span>
</div>
</div></div>

<div class="columns" style="height:70px">
<div style="background:grey">
<div class="grid t" style="height:45px">
<span style="height:45px"><i style="height:45px"></i></span>
</div>
<div style="height:20px"></div>
<div class="grid b" style="height:16px">
<span style="height:16px"><i style="height:35px"></i></span>
</div>
</div></div>

<div class="columns" style="height:70px">
<div style="background:grey">
<div class="grid t" style="height:65px">
<span style="height:65px"><i style="height:65px"></i></span>
</div>
<div class="grid b" style="height:0px">
<span><i style="height:15px"></i></span>
</div>
</div></div>

<div class="columns" style="height:70px">
<div style="background:grey">
<div class="grid t" style="height:60px">
<span style="height:60px"><i style="height:60px"></i></span>
</div>
<div style="height:5px"></div>
<div class="grid b" style="height:1px">
<span><i style="height:20px"></i></span>
</div>
</div></div>

<div class="columns" style="height:70px">
<div style="background:grey">
<div class="grid t" style="height:61px">
<span style="height:62px"><i style="height:62px"></i></span>
</div>
<div style="height:4px"></div>
<div class="grid b" style="height:0px">
<span><i style="height:18px"></i></span>
</div>
</div></div>

<div class="columns" style="height:40px">
<div style="background:grey">
<div style="overflow:hidden">
<div class="grid" style="height:32px;">
<span><i style="height:33px;"></i></span>
</div>
</div>
<div class="grid m" style="height:0px">
<span><i style="height:40px"></i></span>
</div></div>
<div style="height:40px"></div>
<div class="grid m" style="height:0px">
<span><i style="height:7px"></i></span>
</div>
</div></div>

<div class="columns" style="height:40px">
<div style="background:grey">
<div style="overflow:hidden">
<div class="grid" style="height:32px;">
<span><i style="height:33px;"></i></span>
</div>
</div>
<div class="grid m" style="height:0px">
<span><i style="height:40px"></i></span>
</div></div>
<div style="height:40px"></div>
<div class="grid m" style="height:0px">
<span><i style="height:7px"></i></span>
</div>
</div></div>

</body>
</html>
